. >> tomorrow, executives from goldman sachs will be grilled on the financial crisis. todd and vinita? >> t.j. winick in washington, thank you. >>> well, president obama is promising to work for greater safety in the nation's coal mines after that explosion killed 29 workers earlier this month. the president spoke at beckley, west virginia, attendeded by about 3,000 people. >> most days, they'd emerge from the dark mine, squinting at the light. most days, they'd emerge sweaty and dirty and dusted and cold. most days, they'd come home. but not that day. >> before the memorial service, president obama met privately with the families of the miners. >> and before attending the miners' memorial, the president visited with billy graham. according to graham's son, the two men chatted about golf and prayed with each other. >>> and now to the environmental threat off the gulf coast, oil is now gushing off that platform that sank last week. it could go from louisiana to florida. matt gutman reports. >> reporter: for the first time, we got a notion of how long this disaster could